SOLUTION: What numbers cannot be used for x in each rational expression?
a. (3x - 1)/(x^2 - 4)
b. 8/(3 + 2x)
c. 5/x
Can someone please explain this to me, I do not understand
Algebra.Com
Question 421125: What numbers cannot be used for x in each rational expression?
a. (3x - 1)/(x^2 - 4)
b. 8/(3 + 2x)
c. 5/x
Can someone please explain this to me, I do not understand how or why. THanks in advance!!!!!!
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
What numbers cannot be used for x in each rational expression?
The denominators cannot be zero.
----
a. (3x - 1)/(x^2 - 4)
x^2-4 cannot be zero
x cannot be 2 or -2
------------------------------
b. 8/(3 + 2x)
3+2x cannot be zero
x cannot be -3/2
-----------------------
c. 5/x
x cannot be zero
========================
Cheers,
Stan H.
============
RELATED QUESTIONS
Which numbers cannot be used in place of the variable in each rational expression?
2x... (answered by edjones)
Which numbers cannot be used in place of the variable in the rational expression?... (answered by solver91311)
Find the area of a room that has a width of (x+3) and a length of (2x-5). (2.0 points)... (answered by nyc_function)
what numbers can not be used for x in the rational expression... (answered by rfer)
Can someone please help me. I need to write three equations that has to be turned in... (answered by stanbon,vleith)
Multiply each of the polynomial by x+1 with solution:
a. x-1
b. x^2-x+1
c. x^3-x^2+x-1
(answered by KMST)
Which real numbers cannot be used in place of the variable in the rational expression?
(answered by flame8855)
I have tried working this problem but can't figure out, please help. Which numbers cannot (answered by scott8148)
Which numbers cannot be used in place of the variable in the rational expression?... (answered by Fombitz)